Improve search results by including xAI and Grok

In the description, but without the / since it seems nuget.org doesn't consider them two separate terms otherwise.

Author: kzu

src/xAI.Protocol/xAI.Protocol.csproj

@@ -4,7 +4,7 @@
     <TargetFramework>net8.0</TargetFramework>
     <AssemblyName>xAI.Protocol</AssemblyName>
     <PackageId>xAI.Protocol</PackageId>
-    <Description>xAI gRPC protocol client based on the official API reference from xAI.</Description>
+    <Description>xAI Grok gRPC protocol client based on the official API reference from xAI.</Description>
     <GenerateDocumentationFile>true</GenerateDocumentationFile>
     <PackageTags>xai ai grok llm</PackageTags>
     <PackageLicenseExpression></PackageLicenseExpression>

src/xAI/xAI.csproj

@@ -4,7 +4,7 @@
     <TargetFrameworks>net8.0;net10.0</TargetFrameworks>
     <AssemblyName>xAI</AssemblyName>
     <PackageId>xAI</PackageId>
-    <Description>xAI/Grok integration for Microsoft.Extensions.AI</Description>
+    <Description>xAI Grok integration for Microsoft.Extensions.AI</Description>
     <PackageLicenseExpression></PackageLicenseExpression>
     <PackageLicenseFile>OSMFEULA.txt</PackageLicenseFile>
     <PackageRequireLicenseAcceptance>true</PackageRequireLicenseAcceptance>